RASEE: a rapid spin-echo pulse sequence.

A R Bogdan; P M Joseph

doi:10.1016/0730-725x(90)90206-h

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RASEE: a rapid spin-echo pulse sequence.

A R Bogdan·P M Joseph

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Abstract

Most fast-imaging sequences use gradient echoes and a low flip-angle excitation. The low flip angle is used because it gives increased signal when TR less than T1. However, spin-echo sequences are less productive of certain artifacts, among them flow and magnetic susceptibility artifacts. We present a modification of the spin-echo pulse sequence designed to optimize the signal-to-noise ratio for repetition times (TR) less than 100 msec while preserving good image quality. Our implementation performs a 128 x 128 image in under 7 sec (TR = 50 msec) and has been used to follow the dynamics of Gd-DTPA in the rat kidneys.

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Animals Humans Kidney Magnetic Resonance Imaging Models, Statistical Models, Structural Rats Journal Article Research Support, U.S. Gov't, P.H.S.

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A R Bogdan, P M Joseph. 1990. RASEE: a rapid spin-echo pulse sequence.. https://doi.org/10.1016/0730-725x(90)90206-h

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